@loaders.gl/compression/src/lib/no-compression.ts

Decompression and compression plugins for loaders.gl

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors

// NO COMPRESSION
import type {CompressionOptions} from './compression';
import {Compression} from './compression';

/**
 * Applies no compression.
 */
export class NoCompression extends Compression {
  readonly name: string = 'uncompressed';
  readonly extensions: string[] = [];
  readonly contentEncodings: string[] = [];
  readonly isSupported = true;

  readonly options: CompressionOptions;

  constructor(options?: CompressionOptions) {
    super(options);
    this.options = options || {};
  }

  compressSync(input: ArrayBuffer): ArrayBuffer {
    return input;
  }

  decompressSync(input: ArrayBuffer): ArrayBuffer {
    return input;
  }

  async *compressBatches(
    asyncIterator: AsyncIterable<ArrayBuffer> | Iterable<ArrayBuffer>
  ): AsyncIterable<ArrayBuffer> {
    return yield* asyncIterator;
  }

  async *decompressBatches(
    asyncIterator: AsyncIterable<ArrayBuffer> | Iterable<ArrayBuffer>
  ): AsyncIterable<ArrayBuffer> {
    return yield* asyncIterator;
  }
}